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球磨电瓷废料制备透水砖粉体原料
引用本文:张东亮,宋杰光,廖江萍,杨雪晴,曾情,温红彬,黄榕,向芸.球磨电瓷废料制备透水砖粉体原料[J].粉末冶金技术,2023,41(1):84-89.
作者姓名:张东亮  宋杰光  廖江萍  杨雪晴  曾情  温红彬  黄榕  向芸
作者单位:1.萍乡学院材料与化学工程学院, 萍乡 337055
基金项目:江西省教育厅科技项目(GJJ2202102);国家级大学生创新创业训练计划资助项目(202210895002);萍乡市科技支撑计划资助项目(PXST2019-13)
摘    要:研究了球磨工艺对电瓷废料球磨效率的影响,并以电瓷废料球磨粉体为原料制备了透水砖。结果表明:电瓷废料粉体的粒度随球磨时间的延长而逐渐减小,随着球磨转速的增加呈现先减小后增大的趋势,表明球磨效率先提高后降低。由于电瓷废料硬度高,随着大球磨球比例的增加,粉体粒度减小;当中球比例降低后,球磨粉体粒度又随大球比例的增加而增大。当装料量小于35%时,电瓷废料粉体的粒度逐渐上升,球磨效率逐渐降低;当装料量大于35%后,电瓷废料粉体的粒度上升速度加快,球磨效率迅速降低。通过优化电瓷废料球磨工艺并综合考虑透水砖性能,确定球磨时间为20 h、球磨转速为140 r·min-1、瓷球大、中、小级配比为5:3:2、装料量为35%较为合适,球磨后电瓷废料粉体的中位径为4.1μm,筛余量为15%。以电瓷废料球磨粉体为主要原料制备透水砖,获得了抗压强度6.1 MPa、透水系数0.028 cm·s-1的透水砖。

关 键 词:电瓷废料  球磨工艺  透水砖  球磨效率
收稿时间:2020-08-31

Preparing powder raw materials of permeable bricks by ball milling using electric porcelain wastes
Affiliation:1.School of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China2.School of Innovation and Entrepreneurship, Pingxiang University, Pingxiang 337055, China3.Jiangxi Pingxiang Longfa Enterprise Co., Ltd., Pingxiang 337022, China
Abstract:The influence of ball milling process on the ball milling efficiency of electric porcelain wastes was investigated, and the permeable bricks were prepared by using the ball milled electric porcelain waste powders as the raw materials. The results show that, the particle size of electric porcelain waste powders gradually decreases with the extension of ball milling time, and firstly decreases and then increases with the increase of ball milling speed, indicating that the ball milling efficiency first increases and then decreases. Due to the high hardness of electric porcelain waste, the particle size of the powders decreases with the increase of the large ball proportion in the milling ball. After the decrease of the middle ball proportion, the particle size of the powders increases with the increase of the large ball proportion. When the charge amount is less than 35%, the particle size of the electric porcelain waste powders gradually increases, and the ball milling efficiency gradually decreases. When the charge amount is more than 35%, the increasing rate of particle size is accelerated, and the ball milling efficiency is rapidly lowered. By optimizing the ball milling process of electric porcelain wastes and considering the comprehensive performance of the permeable bricks, the suitable ball milling time is 20 h, the ball milling speed is 140 r·min?1, the ratio of large, medium, and small stage of porcelain ball is 5:3:2, and the charge amount is 35%. The median diameter of the electric porcelain waste powders after ball milling is 4.1 μm, the sieve residue is 15%. The permeable bricks with the compressive strength of 6.1 MPa and the permeability coefficient of 0.028 cm·s?1 are prepared by using the ball milled electric porcelain waste powders as the main raw materials.
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